Display modules typically incorporate a transparent hard material such as glass on the outside of the module in order to better protect the display stack from scratches, dents, and other mechanical deformations. However, as displays move to novel form factors such as bendable, foldable, and reliable display modules, these transparent hard materials (e.g., glass) may not be used due to their limited flexibility. Therefore, it is desirable that replacement materials be sufficiently flexible while maintaining the desirable optical (e.g., >90% transmission and low yellow index) and mechanical properties (e.g., pencil hardness >H) that comparable glass hard materials offer.

Disclosed herein is a method of sealing a substrate optionally including a step (1) of applying a primer composition, and including a step (2) of applying a sealant composition, which is obtained by mixing components (A) and (B) of a 2K-sealing system with each other, where an organosilane constituent including at least one hydrolyzable group X, at least one NCO-group and a spacer unit including a moiety MS including in turn at least one sulfur atom and being positioned between X and the NCO-group, is at least present. Further disclosed herein are a sealed substrate obtained by this method, a method of using the organosilane constituent for adhesion enhancement, a sealant composition, a 2K sealing system, and an organosilane constituent.

A polyurethane composition suitable for coating a surface of a substrate. The polyurethane composition can include an aliphatic polyester urethane matrix and a fluorinated ionic antistatic additive. The aliphatic polyester urethane matrix can comprise an aliphatic diisocyanate, a polyester polyol having a polyester diol and a polyester triol, and sulfonated polyester urethane polyol.

Embodiments of the disclosure generally provide compositions and methods related to oligomeric and polymeric urethane materials that contain hydrolyzable polythioaminal groups for use in biomedical applications.

The invention relates to new, water-emulsifiable isocyanates, to a process for preparing water-emulsifiable isocyanates, and to the use thereof.

The present invention provides a sheet-forming body containing a thiourethane bond-having compound and a thiol group-having compound, wherein, in an IR absorption spectrum thereof, the ratio of the peak intensity A of the absorption peak based on the carbonyl group in the thiourethane bond to the peak intensity B of the absorption peak based on the thiol group (A/B) is 20 or more and 250 or less. Using the sheet-forming body, rubber members, especially vulcanized rubber members can be strongly bonded, and the sheet-forming body and an adhesive sheet, which are excellent in handleability and workability, and a laminate produced by bonding rubber layers using the sheet-forming body are provided.

A method for setting polymerization condition includes a physical property acquiring step of, when heating a composition including a polymerization-reactive compound and a polymerization catalyst and/or a polymerization initiator and retaining heat at a predetermined temperature, acquiring a physical property value a derived from a functional group before heating of the polymerization-reactive compound and a physical property value b derived from a remaining functional group after maintaining a temperature for a predetermined time; a remaining functional group ratio calculating step of calculating a remaining functional group ratio from the physical property value a and the physical property value b; a reaction rate coefficient calculating step of calculating a reaction rate coefficient from the remaining functional group ratio on the basis of a reaction rate equation; and a polymerization temperature calculating step of calculating a polymerization temperature on the basis of the reaction rate coefficient and conditions below.

The present invention relates to a method of fast curing a polythiourethane based transparent casted substrate. comprising in a preferred embodiment providing a first component A comprising a polythiourethane pre-polymer Al having isocyanate or isothiocyanate end groups. providing a second component B comprising a polythiourethane pre-polymer BI having thiol end groups. mixing together first and second components A and B and filling a molding cavity of a casting mold assembly with the resulting mixture. curing said mixture to obtain a transparent substrate, wherein at least one latent catalyst that is heat-activatable is added in the process prior to curing step 4). and said catalyst is subsequently activated to accelerate the polymerization reaction forming the polythiourethane based transparent substrate.

A composition includes a reaction product of a mixture of elemental sulfur and at least a first ethylenically unsaturated compound comprising a hydroxyl or carboxyl group.